Dirt-handling machine



Nov. 12, 1929.

' Filed Dec. 8

H. M. PURSEL DIRT HANDLING MACHINE 5 Sheets-Sheet l gwuentoz dttozmqNOV. 12, 1929. I H, PURSEL 1,735,412

DIRT HANDLING MACHINE Filed Dec. 24. 1928 s sheets-s eet 2 12, 1929- H.M. PURSEL DIRT HANDLING MACHINE Filed Dec. 24. 1928 s Sheets-Sheet- (1Wnew Patented Nov. 12, 1929 UNITEDTSTATES PATENT 1 OFFICE HAROLD M.PoRsEL, or GASPIEIQWYOMING, ASSIGNOR TO SHARBOCK AND PURSEL, or CASPER,WYOMING, A COPARTNERSHIP CONSISTING or w. e. srmanoox AND HAROLD 'M.run-SE1.

DIRT-HANDLING MACHINE Application filed December 24, .1928. Serial 'No.328,242.

This invention relates to improvements in power scrapers of the typeemployed in the construction of highways and in other places shall be ofrugged and substantial construction., 7

This invention can be most readily described and understoodwhenreference 18 had to the accompany ng drawings in which the preferredembodiment thereof has been illustrated and in which: I

Fig. 1 is atop plan view of the improved scraper; I I I Fig. 2 is asection taken on line 2-2, Fig. 1, and shows the manner of securing therear end of the frame members tothe axle housing of the tractor;

Fig. is a section taken on line 3-3, Fig.

1, and shows the construction of the Windlass used for controlling thescraper; p

Fig. 4 is a side elevation of the device shown inFig. 1; I I I I y 1Fig. 5 is a section taken on line 55, Fig. 6, and showsthe scraper indumping position; I

I Fig. (3 is a section taken on line 6- 6, Fig. 4; 1

Fig. 7 is a section taken on line 7-7, Fig. 6, and shows the means foroperating the clutch and L I Fig. 8 is a section taken on line 88,Fig.7.

The power plant employed in connection with this machine consists of awell known type of tractor having spaced traction wheels 11 which aresecured to the outer ends ofthe axle housing 12. The engine hasbeenrepreessary for the purpose of properly describing the constructionof the apparatus to which this application relates.

. Two frame members 17 and 17 a which are duplicates with the exceptionthat one is a right and the other is a left, are usually formedfrom'channel beams and have their rear ends secured to the axle housing12 by means of U-bolts 18 that extend about the axle housing andthroughthe flanges in the manner shown in Fig. 2. These bolts are provided withnuts 19 by meansof which they aretightened. The side beams 17 and 17have a straight portion extending from the I axlehonsing to the pointmarked B where they are bent and have another straight portion extendingto point C. From point C to point 1), they are curved and from point Dthey are substantially straight. The shape of the beams has been shownin Fig. 4, fromwhich it will be seen that they are upwardly arched.Although the straight and curved portions described above are desirable,it is, of course, evident thatthe beams may be bent or curved inspecifically different ways, and still produce the desired effect.Secured to and between the front ends of 17 and 17 is a hollow'casting20. Extending downwardly from the underside of casting 20 are two spacedlugs 21 between which the front axle 22 is located and to which it ispivotally secured by means of a pin 23. Front Wheels 24 are secured tospindles 25 that are pivoted to the outer ends of the axle 22 in theusual manner. Each spindle is provided with a rearwardly extending arm26 whose ends are connected by a rod 27 which interconnects the wheelsso that they will rotate simultaneously in the same manner, all in themanner usual and well known in automobile construction. The spindle onthe left end of axle 22 is provided with another arm 127 to the end ofwhich the drag link 28 is con nected. The rear end of this draglink isconnected to the lower end of an arm 29 that is pivoted at 30 and whichis rotated about its pivot by means of a worm gear controlled by thesteering wheel 31. It is now evident that by rotating the Wheel 31 theguide wheels 24 may be rotated about the pivot of the spindles so thatthe operator can guide the machine.

A shaft 32 extends downwardly through the hollow casting 20 and has itsends journalled in bearings in the top and bottom of this casting. Adrum 33 is secured to the shaft by means of a pin 34 and a worm gear 35is attached to the upper end of the shaft. A worm 36 is mounted forrotation in bearings 37 and is connected by means of several sections ofjointed rods 38 to the crank 39, which is located adjacent the driversseat 40. By turning crank 39 shaft 32 and spool 33 may be rotated. Acable 41 is secured to the drum 33 so that it may be wound onto the drumor unwound from the drum by rotating the crank 39.

Secured to each of the side beams 17 and 17 a at the angle B is adownwardly extendingbar 42, whose lower end is secured to the rear sideof a square timber 43. A similar bar 44has its front end secured to theupper surface of timber 43 and its rear end secured to a side memher bymeans of bolts or rivets 45. Bars 42, 43 and the straight sections ofthe side frame members form triangles in the manner shown in Fig. 4.Secured to the ends of the timber 43 are plates 46 whose ends 47 arerounded and form pivots about which the scraper rotates. Reference tothese pivots will be made hereinafter. v

A shaft 48 is journalled in bearings 49 which are secured to the upperflanges of the side members. Secured to the outer ends of shaft 48 aredrums 50, about which the cable 51 maybe wound. The bearing 49 that issecured to frame member 17 is provided at its inner end with ratchetteeth 51, and rotatably mounted on the shaft adjacent the ratchet teethis a rear segment 52 whose hub portion is provided with ratchet teeththat mesh with the ratchet teeth 51 in the manner shown in Fig. 6.Another gear segment '53 is secured to a shaft 54 that is journalled inbearings 55 secured to the underside'of the side members.

This segment has a downwardly extending arm 56 to the-end of which a rod57 is pivotally connected. This rod is provided with a plurality ofteeth 58 and'extends through an opening in a plate 59. The teeth 58serve to hold the rod 57 in adjusted position. Secured to shaft 48 so asto rotate therewith is a'clutch member 60. This clutch member is made inthe shape of a brake drum and has a cylindrical surface 61 that isadapted to be engaged by a brake band 62 to which reference willpresently be made. Member 61 is also provided with a conical surface 63that cooperates with a corresponding conical surface 64 on the clutchmember 65. This clutch member is provided with gear teeth 66 thatcooperate with the-chain 67 which extends from clutch member 65 to thegear wheel 68 on the power take-off. lVhen the tractor is running,clutch member 65 will be rotated but as it is not attached to shaft 48,it will not retate the latter until the gear segment 52 is rotated in aclockwise direction, Fig. 7, when it will be forced against the clutchmember 60 so as to cause the conical surfaces 63 and 64 to come intofrictional engagement, whereupon the shaft is rotated in manner quiteapparent. Shaft 48 is also provided with a ratchet wheel 69 which isadapted to be engaged by a latch member 70 that is controlled by meansof a rod 71. When the latch member 70 is moved so as to come intoengagement with the teeth on member 69, it will hold the shaft againstrotation in one direction. Shaft 54 is provided with a crank arm 72 towhich one end of the brake band 62 is attached. This brake bandencircles clutch member 61 and when the parts are in the position shownin Figs. 6 and 7, the brake becomes efiective for the purpose ofcontrolling the rotation of shaft 48.

A scraper having a bottom 73 and two sides 74 is located underneath theframe in the manner shown in Fig. 4. The sides 74 are provided neartheir upper rear corners with elongated slots 75 through which the pivotpins 47 extend. A red 76 extends trainsversely of the scraper and issecured to the upper edges of sides 74 by means of clamping members 77.An end gate 78 is pivotally attached to red 7 6s0 that it may swing fromthe closed position shown in ig. 4 to the open position shown in Fi g.5. The end gate is provided with two spaced bolts 79 that are slidablel'I1,'l'l16 l38211-1l1gS 80 and which can be projected downwardly beyondthe lower edge of the end gate so as to extend through openings 81 inthe bottom ofthe scraper. Control levers 82 are pivoted at 83 to the endgate and are pivotally attached to bolts 79 by means of pivots 84. Theadjacent ends of levers 82 are connected by a pin 85 which extendsthrough slots 86. A cable 87 is attached to one of the levers 82 andextends upwardly passing through an eye 88 and terminating at 89 in ahandle that can be grasped'by the'operato-r' so that he may release thelatching means that holds the end gate in place and permit the same tomove to open position when the scraper is to be dumped.

Cables 90 have their lower ends connected to the upper front corners ofsides 74 and have their upper ends connected with the drums 50 so thatwhen shaft 48 is rotated these cables are wound onto or unwound from thedrums depending upon the direction in which the drums are rotated.Cables 41 are connected to the lower front corners of sides '74 in themanner shown in Fig. 4.

Referring now to Fig. 6, it will be seen that the frontend of thetractor is supported by means of a bar 91 that occupies the positionfrom which the front axle has been removed and which is connected bymeans of a bolt 92 with the downwardly extending lugs 98. The ends ofbar91 are secured to the lower ends of vertical bars 42 so as to providea substantial support by means of which the weight of the front end ofthe tractor is transferred to the frame member 17 and 17. The front endof the scraper is reenforced by a steel shoe 94 which extends a shortdistance to the front of the body. This shoe may be made of steel andmay be secured in place so that it can be removed for sharpeningwhenever this is necessary.

The operation of this device will now be described. When the scraper isto be filled with material, it is lowered into the position shown inFig. 4, and the machine caused to move forwardly. The scraper will soonbe filled with dirt or other material, and as soon as this occurs theoperator grasps the ends of bar 57 and rotates the gear segment 52 untilthe friction surfaces 63 and 64 come into contact with each other,thereby rotating shaft l8 and the drums 50. hen the drums are rotatedcables 90 are wound onto the drums, and these then raise the front endof the scraper towards the position shown in Fig. 5. If the dirt is tobe transported to any distance the scraper is raised only sufficientlyto permit the machine to travel and when it is to be dumped shaft 48 isstill further rotated so as to move the scraper into the position shownin Fig. 5. The end gate is then released and swings to the open positionshown in Fig. 5, thereby pern'iitting the contents of the scraper to bedumped.

When the scraper is to be again filled, the operator removes the latch70 and controls the downward movement of the scraper by means of thebrake band 62. The operation is now repeated in the manner and bythemeans above described.

From the above description it will be seen that I have produced a poweroperated scraper that is especially well adapted for handling andtransporting material, and which can be easily controlled and by meansof which the material can be readily dumped in any position desired.

The cables 41 can be lengthened or shortened by means of the Windlassabove described and serve to control the scraper and limit its sidemotion as well as its downward tilt.

The tractor which has been shown associated with the apparatus can, ofcourse, be

replaced by a tractor of any suitable design and can even be replaced bya caterpillar tractor in cases where such tractors are deemed to bepreferable.

Having described the invention what is claimed as new is:

1. A power operated scraper comprising an upwardly arched frame havingspaced side members, the rear end of said frame being secured to atractor, a pair of wheels secured to the front end of the frame, a shaftextending transversely of the frame and mounted for rotation thereon, aclutch associated with said shaft, means for rotating one part of rearend of the scraper with the frame so that it can be rotated about ahorizontal axis, a cable securedto each side of the scraper near thefront end thereof, the other ends of the cable being secured to theshaft and adapted to be coiled about the latter when the shaft isrotated in one direction whereby the front end of the scraper is raised,a windlass secured'to the front end of the frame, a cable 7 extendingfrom the lower front corner of each side of the scraper to the Windlass,means for rotating the Windlass so as to vary the length of the cables,an end gate pivotally secured to the rear end of the scraper andlatching means carried by the end gate for holding it inclosed'position. y

2. A power operated scraper comprising an upwardly arched frame havingspaced side members, the rearend of said frame being secured to atractor, a pair of wheels secured to the front end of the frame, a shaftextending transversely of the frame and mounted for rotation thereon, aclutch associated with said shaft, means for rotating one part of theclutch from a power take-off on the tractor, means for moving the clutchmembers into and out of operative position, a ratchet means associatedwith the shaft for holding it against rotation in one direction, meansfor moving said ratchet means into and out of] operative position, meansextending downwardly from the frame for supporting the front end of thetractor, a pair of oppositely extending alignedpivots secured to theframe and located below the frame, a scraper located underneath theframe, said scraper having spaced sides, each side member having anelongated slot at its rear upper corner adapted to receive one of thepivots, a cable connecting each front upper corner of the sides with thetransverse shaft, said cables being adapted to be wound about the shaftwhen the latter is rotated in one direction, an end gate pivotallysecured to the scraper near its rear end, latch means for holding theend gate in closed position, a Windlass secured to the front of theframe, a cable extending from the lower front corner of each side to thewind- HAROLD M. PURSEL.

